GENERAL DESCRIPTION

The AD8055 (single) and AD8056 (dual) voltage feedback amplifiers offer bandwidth and slew rate typically found in current feedback amplifiers. Additionally, these amplifiers are easy to use and available at a very low cost.

Despite their low cost, the AD8055 and AD8056 provide excellent overall performance. For video applications, their differential gain and phase error are 0.01 and 0.02° into a 150 Ω load and 0.02 and 0.1° while driving four video loads (37.50 Ω).

FEATURES

Low cost single (AD8055) and dual (AD8056)

Easy-to-use voltage feedback architecture

High speed

300 MHz, −3 dB bandwidth (G = +1)

1400 V/μs slew rate

20 ns settling to 0.1

Low distortion: −72 dBc @ 10 MHz

Low noise: 6 nV/√Hz

Low dc errors: 5 mV max VOS, 1.2 μA max IB

Small packaging

AD8055 available in 5-lead SOT-23

AD8056 available in 8-lead MSOP

Excellent video specifications (RL = 150 Ω, G = +2)

Gain flatness 0.1 dB to 40 MHz

0.01 differential gain error

0.02° differential phase error

Drives 4 video loads (37.5 V) with 0.02 differential

Gain and 0.1° differential phase

Low power, ±5 V supplies 5 mA typ/amplifier power supply current

High output drive current: over 60 mA

APPLICATIONS

Imaging

Photodiode preamps

Video line drivers

Differential line drivers

Professional cameras

Video switchers

Special effects

A-to-D drivers

Active filters